19417840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18671}}^1$

素因数の和:18697

約数の個数: 40

約数和(自身を含む): 48621888

約数和(自身を除く): 29204048

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18671, 37342, 74684, 93355, 149368, 186710, 242723, 298736, 373420, 485446, 746840, 970892, 1213615, 1493680, 1941784, 2427230, 3883568, 4854460, 9708920, 19417840]

約数ペア:

[(1, 19417840), (2, 9708920), (4, 4854460), (5, 3883568), (8, 2427230), (10, 1941784), (13, 1493680), (16, 1213615), (20, 970892), (26, 746840), (40, 485446), (52, 373420), (65, 298736), (80, 242723), (104, 186710), (130, 149368), (208, 93355), (260, 74684), (520, 37342), (1040, 18671)]